Ref: Your note of Fri, 18 Jan 2013 14:58:20 -0800 Unless I've missed something, John Ehrman's method doesn't work for intercepting an instruction, only for a macro, such as the READ macro shown in the example. For an instruction, you need to save the built-in definition before you can replace it with a macro.
Regards Jonathan Scott HLASM Development IBM Hursley, UK glen herrmannsfeldt <[email protected]> wrote: > Jonathan Scott wrote: > ... > > DC_ OPSYN DC Set up alias for original DC > > DC OPSYN MYDC Redirect DC to my macro > > > Then within the macro you can use > > DC_ &whatever Issue real DC > > But John Ehrman's method is neater, as it doesn't require a > special OPSYN from the outside. > > Some one could directly call MYDC, or use OPSYN, either > way it would work.
